Cyber Morse Code?
 

Israeli university researchers have developed a technique that defeats the inherent security of an off-network computer (i.e., a computer not attached to any network) by deciphering blinks from a hard drive’s LED indicator. The attack requires that someone with inside access installs malware on the targeted system. In a demonstration, the researchers used a drone hovering outside a window to read the information being transmitted by a hard drive’s blinks.

 

 

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